/Engine/Source/Runtime/CoreUObject/Public/Misc/PackageName.h
Find a mount point that contains the given LocalFilePath or PackageName, and if found, return the MountPoint and RelativePath
True if the MountPoint was found, else false
static bool TryGetMountPointForPath ( FStringView InFilePathOrPackageName, FStringBuilderBase & OutMountPointPackageName, FStringBuilderBase & OutMountPointFilePath, FStringBuilderBase & OutRelPath, [EFlexNameType](API\Runtime\CoreUObject\Misc\FPackageName\EFlexNameType) * OutFlexNameType, [EErrorCode](API\Runtime\CoreUObject\Misc\FPackageName\EErrorCode) * OutFailureReason )